Fuel-tank-lock cap



SePt- 23,1930-v c. M. RUSHING 1,776,704

FUEL TANK LOCK vCAI Filed March 21, 1929 5 j Z7 f ffl/ f Z5 m if p fa 217 /75 gwue'ntoz f Patented Sept. 23,1930 Y ip i Y UNrrED srA'rsv PATENT opp-ICE] Application mea March a1, 1929. serial No. 348,937.

lThis invention relates to a lock Cap pripresent invention. The rotatable cylinder marily designed for fuel tanks although is of the lock is shown at 15 and its housing 16 capable Vof use on tanks or closures generally. is rigidly fastened to the cap y11. y I Itis aimed to provide an exceedingly sim- Rotatable with the drum 15 is a plate 17 ple and inexpensive construction adapted which is maintained in place on the drum 55 for application to a cap for coaction or enby a disk 18 screwed thereto as at19.` gagement with a filling tube or the like eny The housing or fixed part 16 has spaced gaged by the cap, without necessitating any apart ears 18 between which the inner ends mutilation or adaptation of the latter to of look members20 are positioned and pivreceive the lock.Y otally mounted on removable screws 21. In 60 It is further aimed to provide a novel the locked position, as-'shown in Figure 2, construction wherein a permutation lock the lock members 2() are adapted'to frictionmechanism under key control is carried by ally engage thel inner wall of the tube 10 and the cap and has expansible and retractile they are urged to that position by means of means which in the locked position engages expansive springs 22 which surround arcu- 65 frictionally with the inner wall of the iillate rods 23 pivoted at 24' to the lock meming tube in such manner as to bind one end bers. The rods `23 pass through guide lugs V to straighten in the event the cap should be 24 rising from arms 25 of the plate 17 and attempted to be removed by an unauthorized beyond such lugs 24` have heads 26 thereon. person. In the locked position of the parts, a stop 70 Various additional objects and advanlug 27 on one of the arms 25 abuts the easV tages will become apparent from a considing 16 at a part 28 thereof and such engageeration of the description following taken ment is maintained through the expansion of in connection with accompanying drawings the springs 22. In the said locked position,

illustrating an operative embodiment. it will be realized that any attempt to unscrew 75 In said drawings the cap will simply result in tending to Figure 1 is a plan view of the cap; straighten or move the lock members 20 to Figure 2 is an inverted plan view of the a truly radial position, which of course cancap, the filling tube being shown in cross not be done in view of their length and the 30 section and the cap as locked; fact that they bind with the inner wall of 80 Figure 3 is a view similar to Figure 2 tube 10 when tangential. At the same time, in which the cap is shown unlocked; upon insertion of the proper key 14, the cy1- Figure 4 is a central vertical sectional inder 15 may be slightly turned so that the view taken on the line 4 4 of Figure 2; and plate 17 will be rocked, `thereby pulling the Figure 5 is a central vertical sectional rods 23 and the lock members 20 t0 the un- S5 view taken on the line 5-5 of Figure 2. locked position shown in Figure 3. In the Figure 6 is an enlarged view showing a position of Figure 3, the cap can be readily connection in the operating mechanism of removed, The Cap may be replaced when the device. the lugs are either in locked or unlocked pow Referring specifically t0 the ClIaWlIlgS, 10 sition since the latter yield during movement designates the filling tube, nipple or the toward the locking position but will not perlike of a gasoline tank as used on automomit retrograde movement of the Cap biles or other equivalent tube to which a cap Various Changes may be resorted t0 pro- 11 of conventional structure is screw threadvided they fall within the spirit and scope ed as at 12. of the invention. y 95 In accordance with my invention, a con- I claim as my invention- Y ventional lock generally designated 13 is LA cap havinga lockv controlled plate carried by the cap 11 and is under control concentric with the cap, a lock member carof a key at 14, the specific construction of ried by the cap, and a spring and rod conthe lock of course forming no part of the nection between the lock member and plate Anormally urging the member to locked position.

2. A cap of the class described having a key-controlled plate, a lock member pivoted 5 to the cap and adapted to wedge between the cap and the element to which it is fastened, means whereby the operation of the plate may retract said wedge member comprising an arcuate rod connected to the'wedge memw ber, means on the plate through which the rod loosely passes, a fastening on the rod engaged by the latter means, and an expansive spring on lthe rod between the latter means and the lock member.

3. A cap of the class described having a key-controlled plate, a lock member pivoted to the cap and adapted to wedge between the cap and the element to which it is fastened, means whereby the operation of the plate may retract said wedge member comprising an arcuate rod connected to the wedge member, means on the plate through which the rod loosely passes, a fastening on the rod engaged by the latter means, an expansive spring on the rod between the latter means and the lock member, and a fixed element on the Vcap and a cooperating stop on the plate normally maintained in engagement by said spring means.

In testimony whereof I aiiix'my signature.

oLYDE M. RUSHING. 

